battle_cry
1. [ noun ] a yell intended to rally a group of soldiers in battle
Synonyms: war_whoop rallying_cry war_cry
Related terms: cry
2. [ noun ] a slogan used to rally support for a cause
Synonyms: cry rallying_cry watchword war_cry
Examples:

"a cry to arms" "our watchword will be `democracy'"

Related terms: motto
Similar spelling:   battle-axe
  Battles
  battle_sight
  battle_group
  battle-ax
  battleship